Winding-mount for power-spring.



H KOCOUfiEK. WINDING MOUNT FOR POWER SPRING.

Patented Feb. 5, 1918.

jfiflzyflacaan /f APPLlCATlON FILED DEC .28.19I6- ATEWT Flil t,

HENRY KOCOU'REIQOF JERSEY CITY, NEW JERSEY, ASSIGNOR TOJULIA B. STEWART, EXECUTRIX OF JOHN K. STEWART, DECEASED.

WINDING-MOUNT FOR POWER-SPRING.

L255A31l...

Application filed December 28, 1916.

1 '0 all whom, it may concern:

c it known that I, HENRY KoCoURnK, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Winding- Mounts for Power-Springs, of Which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved construction for mounting vention, section being made at the hue, 11 on Fig.

Fig. 2 is a section at the line, 22, on Fig. 1.

The drawings show this invention as applied to a sprlng motor of the character adapted for a sprlng starter for automobile engines and certain details which appear in the drawmgs not material to the present in vention are the details of such spring starter not herein claimed. In such spring starters, the starting shaft or power shaft is also the winding shaft shown at 1, having clutch engagement with the spring drum and specifically with the winding mount, 2, by means of a one-way driving clutch, 6, the detail construction of which is immaterial to the present invention. The motor spring, 4;, is anchored at its outer end to the casing, 3, by means of the bolt, 5. For this pur ose the outer end of the spring is bent to orm an eye, 4?, which is rendered unopenable by bending the spring back upon itself and riveting the end to the body, as seen at 41:", leaving the eye sufiiciently large to be slipped'onto the bolt, 5, or passed easily through it after the spring is in position in the casing. The spring mount or drum, 2, which is the hub of the final gear of the winding train partly shown at 2, has a longitudinal channel, 2', whose sides are preferably abrupt,that is, approximately radial with respect to the cylindrical mount or drum, to form abrupt shoulders for stopping the key hereinafter mentioned on the end of the spring, The spring, 4, has its Specification of Letters Patent.

form of that end to have the bolt Patented lfieb. 5, Mlle. Serial No. 139,371.

inner coil rendered a closed rigid ring by riveting the end portion securely to the next outer lap of the coil as seen at 4:, this ring being of such diameter as to be passed easily but without any considerable play onto the drum or mount, 2. For engaging this longitudinal groove or channel, 2*, the said closed ring, 4 formed by the inner coil of the spring, is provided with an interiorly projecting key, 4 adapted to enter and engage securely in the said groove, 2, of the mount.

Preferably this key is formed by folding back the end of the spring upon itself. Inasmuch as the ring, 43, fits without any eonsiderable play about the cylindrical mount and is substantially unstretchable, it will be secnthat the key formed by the folded-back end of the spring insures the permanent engagement of the spring with the mount without regard to the character of the shoulders of the groove or of the key,-that is, whether they are abrupt for engagement with each other, or otherwise, but it is preferable to have the groove formed with abrupt shoulders as stated, and the key correspondingly formed. This results as to the side of the key which is formed by the end of the spring by reason of the square and such abrupt shoulder 1s approximately obtained at the fold which forms the other side of the key.

The construction above described for securely anchoring the spring to the mount is of especial importance in the case of power springs for such spring motors as are suitable for spring starters for automobile engines, in which the spring is wound up by the running of the power shaft by the engine after it is started, and in which the spring is necessarily so strong and powerful and the mechanism which is driven by it so heavy, that the inertia of the latter when set in motion by the initial unwinding of the spring is liable to be so great that in case of any failure of action of the devices for disengaging the train which connects of mounting be such as to require the'spring V to be released at any time in the process; and the anchoring devices or expedients for securing the two ends of the spring to the casing and to the mount respectively, must be such as not torequire any springing or fiexure of the spring itself in order to effect the engagements. These conditions, it will be seen are met by'the structure shown, be cause the spring being coiled by any suitable mechanism and bound tightly in coiled condition, as by the wire, 15, shown in Fig. '2, the spring becomes an inert mass and vcan be inserted on the mount and in the casing by movement axially of theshaft, 1,the key,

4:, easily engaging the groove, 2, in the mount as the spring is slid into place; and the spring having been coiled to a predetermined extent so as to bring'the eye, 4i, at

V the proper radialfdistance from the axis of the mount, and the shaft being turned the necessary angular distance to be registered with the threaded aperture, 3*, of the casin Gopiesof this patent may be obtained for provided to receive the bolt, 5, the outer member or cap, 3, of the casing is applied outside the spring and said bolt, 5, is then inserted through the aperture, 3, of the easing and through the eye, P, of the spring, and screwed home.

I claim 1. In a spring motor, a winding mount for a motor spring consisting of a cylinder having a longitudinal groove of which both sldcs form abrupt stop shoulders, in combination with a motor spring having its 11111QI'C0il1'61'1 dered a rigid closed ring by riveting the end of the spring at its outer lap, and having rigid with said ring interiorly thereof, a key fitted to said longitudinal channel of the mount.

2. In a spring motor, a winding mount for a motor spring consisting of a cylinder hav ing a longitudinal groove of which both sides form abrupt stop shoulders, in combination with a motor spring having its inner coil rendered a rigid closed ring by riveting the inner end to the next outer lap of the coil, and having said inner end folded back inwardly upon itself to form a rigid key litted to said longitudinal channel of the mount.

'In testimony whereof, I have hereunto set my hand this 24th day of November, 1916.

HENRY KO COUREK.

five cents each, by addressing the Commissioner of Patent Washington, D. C. 

